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30 persons can finish a job in 20 days. After 6 days, how many persons should leave the job, so that work is completed in a total of 26 days?
- A9
- B12
- C8
- D7
Answer not set
Discussion 1
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0
CCommunity
30 persons can finish a job in 20 days,
⇒ Total work = Days × men = 20 × 30 = 600 units
Work done in 6 days by 30 men = 6 × 30 = 180 units
⇒ Remaining work = 420 units
As the work is completed in a total of 26 days,
⇒ Remaining 420 units work to be completed in 20 days,
⇒ No of men = 420/20 = 21 men
∴ 9 men should leave.
⇒ Total work = Days × men = 20 × 30 = 600 units
Work done in 6 days by 30 men = 6 × 30 = 180 units
⇒ Remaining work = 420 units
As the work is completed in a total of 26 days,
⇒ Remaining 420 units work to be completed in 20 days,
⇒ No of men = 420/20 = 21 men
∴ 9 men should leave.